The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 31, 2006
Filed:
Apr. 29, 2005
Chang-hyun Shin, Suwon-si, KR;
Chang-Hyun Shin, Suwon-si, KR;
Hyundai Motor Company, Seoul, KR;
Abstract
A Liquefied Petroleum Injection (LPI) fuel pump diagnosis system for determining the operation state of a fuel pump by analyzing a signal inputted from a fuel pump driver of an LPG tank into an interface box, including a fuel pump relay that provides power to the fuel pump and cut-off solenoid valves, an LPG switch that allows a user to isolate the fuel supply, a voltage detector disposed in the interface box that detects a voltage between the LPG switch and the fuel pump relay by being connected to a signal line that connects the LPG switch and fuel pump relay, and an ECU of the interface box that determines whether a signal line connecting the fuel pump driver and interface box is disconnected by determining whether the LPG switch is on or off through analysis of the voltage detected via the voltage detector.